Draft-equalizer.



A. H. LEAVETT. DRAFT EQuALlz'ER.' APPLICATION mib JULY 5.19m

1,214,691. Patented F6116, 1917.

f-f I/V- Ig a g ifL /7 ALBERT HENRY LEAVITT, 0F CLGVERDALE, CALIFORNIA.

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Specification of Letters Patent.

Patented Feb. e, 1917.

Application filed July 5, 1916. Serial No. 107,644.

To all whom it may concern Be it lrncwn'that I, ALBERT HENRY LEAV- rrr, a citizen of the United States, residing at Cloverdale, in the county tain new and useful Improvements in Draft- Equalizers, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to certain improveincluding a clevis block capable of adjust-. ment longitudinally of a double-treel to-` gether with means whereby said clevis block may be effectively and conveniently locked in its different adjustments. Y

The invention consists in the details of construction and in the combination and ar- Y rangement of the several parts of my improved equalizer whereby certain important advantages are attained and the device is rendered simpler, less expensive and otherwise more convenient and advantageous for use, all as will be hereinafter more fully set forth.

The novel features of the invention will hereinafter be definitely claimed.

In order that my invention may be the better understood, I will now proceed to` describe the same with reference to the accompanying drawings, wherein# Figure 1 is a view in top plan illustrat` ing a draft equalizer constructed in accordance with an embodiment of my invention and in applied position; Fig. 2 is an enlarged longitudinal sectional view taken through my improved. equalizer as herein set forth; Fig. 3v is a sectional view taken substantially on the line 3-3 of Fig. 2; and Fig. 4 is a fragmentary view in front elevation illustrating the graduations as employed in my invention as herein disclosed.

As disclosed in the accompanying drawings, D denotes a double-tree of conventional construction. Secured to the outer of Sonoma and State of California, have inventedcerface of the double-tree D at substantially its longitudinal center is the elongated casting 1 provided with the longitudinally disposed guideway 2, the top and bottom of which being open. The inner face of the guideway 2 is provided with the transversely disposed `teeth 3 with which are adapted to interlock with the teeth 4 carried by the inner face of the clevis block 5, said block 5 being provided with a centrally disposed vertical opening 6 with which the clevis C is adapted to coact in a conventional manner. The teeth 3 are depressed within the inner face of the guideway 2 and terminates slightly below'the outer surface thereof in order to afford the unobstructed marginal portions 7 and with which Contact the extensions 8 formed at the top and bottom of the clevis block 5. The clevis block 5 is of a thickness less than the width of the guideway 2 and has produced in its outer face the recesses or pockets 9 and has its corners adjacent said pockets provided with the bevels 10 to facilitate the entrance within the pockets 9 of the pin l1 depending from the fiat spring 12 secured tothe under face of the locking block 14, said block 14 beneath the spring being reduced as'at 15, in order that the same may be properly adjusted in order to disengage the pin 11 from within a pocket or recess 9. As herein embodied, one end of the spring 12 is anchored to the locking block 14 by a pin 16 which also extends through a slot 17 formed longitudinally of the outer wall of the casting l, whereby the locking block 14 may be conveniently moved in either applying or removing the same from operative position.

The locking block 14 is adapted to snugly fit between the clevis block 5 and the outer wall of the casting 1 and when in superposed relation relative to said block 14, serves to maintain the same inV a fixed adjustment longitudinally of the guideway 2.

In order to shift the clevis block 5 in order to effect the requisite equalization of the draft, the locking block 14 is disengaged from the 'clevis block 5, whereupon the clevis block is adjustedv the requisite distance in either direction. In order to determine the extent of said adjustment of the clevis block 5, I find it of advantage to provide the upper surface of the rear wall of the casing 1 with the lineal graduations 18 preferably in inches and fractions theretof. After the clevis block has been properly positioned within the guideway 2, the locking block 14 is then operatively engaged therewith for maintaining the block in its desired adjustments. Y

The lower marginal portion of the outer Awall of the casting 1 is provided with the inwardly directed longitudinal flange 19 with which the lower end of the locking block 14 is adapted toengage in order to fa- 'cilitate its movement longitudinally of the guideway 2.

As herein embodied, it is to be noted that the graduations 1S are disposed in opposite directions from a central point as indicated at 20, so that the draft may be equalized at opposite sides of the longitudinal center of the double-tree, although I do not wish to be understood as limiting myself to this eX- act arrangement.

From the foregoing description, it is thought to be obvious that an equalizer constructed in accordance with my invention isv of an extremely simple and comparatively inexpensive nature and is particularly well adapted for use by reason of the convenience and facility with which it may be assembled, and it will also be obvious that my invention is susceptible of some change and modification without material departure from the principles and spirit thereof and for this reason I do not wish to be understood as limiting myself to the precise arrangement and formation of the several parts herein shown in carrying out my invention in practice, eX- cept as hereinafter claimed.

I'claim:

1.V In combination with a double-tree, a draft equalizer adapted to be secured to the outer face thereof and including a casting provided with a guideway disposed longitudinally of the tree, the outer surface of the inner wall of the casting being provided with teeth, a clevis block insertible within the guideway and provided with teeth adapted to intermesh with the teeth of the casting, 'a locking block adapted to be inserted between the clevis block and the outer wall of the guideway, the outer face of the clevis block. being provided with a pocket, and a spring-pressed pin carried by the locking block adapted to be inserted within the pocket of the clevis block.

2. In combination with a double-tree, a draft equalizer adapted to be secured to the outer face thereof and including a casting provided with a guideway disposedV longitudinally of the tree, the outer surface of the inner wall ofthe casting being provided with teeth, a clevis block lnsertible within the guideway and provided 'with teeth adapted to intermesh withk the teeth of the casting, a locking block adapted to be 1nserted between the clevis. block and the outer wall of the guideway, the outer face 0f the clevis block being provided with a pocket, a spring-pressed pin carried by the locking block adapted to be inserted within the pocket of the clevis block, the outer wall of the guideway being provided with a longitudinally disposed slot, and a pin carried by the locking block disposed through said slot.

In testimony whereof I hereunto affix my Witnesses:

C. E. LEAVITT, C. T. COFFEY.

Copies of this patent may be obtained for ve cents each, by addressing the Gommissioner of Patents,

Washington, D. C. 

